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Rollout: Not a huge amount of equity at stake here; nevertheless...

Posted By: Timothy Chow
Date: Wednesday, 16 June 2010, at 10:36 p.m.

In Response To: Not a huge amount of equity at stake here; nevertheless... (Timothy Chow)

One thing that puzzles me about the rollout below is that if we naively read the "cubeless" numbers then it appears that 6/2 wins more games but loses more gammons. I'm not sure I believe that, though. I'll try rolling out the position at DMP and GS.

gnubg62


3X3X3X2X2X '2O ' ' ' ' '

5O3O3O ' '2O ' ' ' ' '2X

tchow68

Position ID: d7cBBgDfHQPAAA Match ID: cIkFAHAAEAAA

# Ply Move Equity
• 1 R 6/5 6/3 -0.745
0.2830.0010.000-0.7170.0330.001 -0.467 -0.745
0.0010.0000.000-0.0010.0010.000 0.002 0.005
Full cubeful rollout with var.redn.
1296 games, Mersenne Twister dice gen. with seed 892873406 and quasi-random dice
Play: supremo 2-ply cubeful prune [world class]
keep the first 0 0-ply moves and up to 16 more moves within equity 0.32
Skip pruning for 1-ply moves.
Cube: 2-ply cubeful prune [world class]
2 R 6/2 -0.765 ( -0.020)
0.2840.0020.000-0.7160.0470.001 -0.478 -0.765
0.0010.0000.000-0.0010.0010.000 0.002 0.006
Full cubeful rollout with var.redn.
1296 games, Mersenne Twister dice gen. with seed 892873406 and quasi-random dice
Play: supremo 2-ply cubeful prune [world class]
keep the first 0 0-ply moves and up to 16 more moves within equity 0.32
Skip pruning for 1-ply moves.
Cube: 2-ply cubeful prune [world class]

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